latimer



2 R. ER M HE G AB L G W Patented Mar. 17,1891.

ITH/ETILDT' .Lallimer 5 M5 (No Model.) 2 Sheets-Sheet 2.

W. G. LATIMER. CASH REGISTER.

No. 448,245. Patented Mar. 1'7, 1891.

- H I H H H H H f r lLhEEEEEJ lh 'r 3'r:

William G LELEiTTIET UNITED STATES PATENT OFFICE.

WILLIAM G. LATIMER, OF DETROIT, MICHIGAN, ASSIGNOR TO THE LATIMER CASH REGISTER COMPANY, OF SAME PLACE.

CASH-REGISTER.

SPECIFICATION forming part of Letters Patent No. 448,245, dated March 17, 1891.

Application filed April 19, 1890. serial No. 348,742. (No model.)

To (.tZ-Z when]. it may concern:

Be it known that I, IVILLIAM G. LATIMER, a citizen of the United States, residing at Detroit, in the county of \Vayne and State of Michigan, have invented certain new and useful Improvements in Cash-Registers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to new and useful improvements in cash-registers; and the in vention consists in the peculiar construction of a device for preventing the simultaneous operation of two or more keys.

This invention is intended to form an improvement upon my United States Letters Patent No. 400,107, dated August 1-3, 1889.

In the drawings, Figure 1 is a vertical section through a caslrregister, showing my invention in elevation. Fig. 2 is an enlarged view showin my invention in section. Fig. 3 is a plan view of the devices shown in Fig. 2. Fig. 4. is a vertical cross-section at right angles to that shown in Fig. 2 on line so :0, Fig. 1; and Fig. 5 is a detail.

A are the keys grouped in banks of nine, pivoted upon the transverse shaft C, and each carrying at its rear end the tablet-rods D and registering-rods E, the latter operating'the registeringwheels F through the medium of the swinging rack-bar C.

II is a swinging bar engaging under the shoulder II, which bar is moved out during a limited period by the arm I, moved by the F knocker I, all of known construction.

a is a cross-bar, having either an inclined lower edge or having a step b above each keylever, so arranged that the operation of each key will raise the cross-bar a dilferent distance. This bar at its ends engages in vertical guides c.

d is a quick-threaded screw secured centrally upon the top of the cross-bar a. This screw passes through a central aperture in the disk e, which is pivotally supported in the bar f of the frame. The relative movements of the screw and key are governed by the extent of the step on the bar a, and the rotation of the disk is governed by the relative verti cal movement of the screw and the pit-eh of the thread thereon.

g is a bar slidingly secured to the under side of the disk in the guides 72, and having head 0'- apertured to embrace the screw and of SUll'lOlOllh size to allow a slight lateral movement of the arm upon the screw. This head has a semicircular serew-threaded bearing j upon one side. This hearing is held in engagement with the screw by the spring 7:. The disk has an aperture Z near its edge, the free end of the bar 9 extending partially across this aperture.

m, Fig. 3, is a spiral spring secured at one end to the bar f and at the other end to the flange n on the disk 6.

o is an abutment on the disk, adapted to strike the stop 0 and hold the disk in against further rotation by the tension of the spring.

p are a series of curved arms on the keys, arranged beneath the disk and in the path of the aperture 7.

The parts being thus constructed and arranged, they are intended to operate as follows: Upon the operation of a key-say the middle key, as shown in Fig. 2-the key rises a short distance before striking the bearing Z; of the cross-bar a. lVhen it strikes the crossbar, it raises it and with it the screw (Z. The engagement of the screw with the screwthreaded bearingj of the bar g, which is carried by the disk, causes the disk to rotate until the end of the lever g is opposite the up per endof the pin 1) upon this lever. The further upward movement of the key bears against the end of the bar g, moving it inward and disengaging the bar 9 from the screw, thus stopping further actuation of the disk. The aperture Z in the disk is thus stopped opposite the pin, which enters the aperture in its farther upward movement, look ing the disk from further movement. The disk having but one aperture, it is evident that but one key can be operated at a time. If two or more keys are operated, the pin upon but one can enter the aperture in the disk. The others would strike the imperforate portion of the disk. hen the key is lowered,

the spring on returns the disk to the normal position, and the spring is likewise returns the arm g to its normal position.

hat I claim as my invention is-- 1. In a cash-register, the combination, with the keys, of a series of arms carried thereby, a movable disk having an aperture, and connecting mechanism adapted to move the disk, bringing said aperture in position to register with the arm on an operated key, substantially as described.

2. In a cash-register, the combination, with the keys, of a series of arms carried thereby, a rotating disk having a single aperture, and connecting mechanismadapted to rotate said disk tobrin g the aperture to register with the arm onlan operated key, substantially as described. 7 Y

3. In acash-register, the combination, with the keys, of a series of arms carried thereby, a cross-bar adapted to be moved a diflterent distance by each key, a screw on said crossbar, a disk rotated by said screw, and an aperture in said disk, adapted to register with the arm of an operated key, substantially as described.

4. In a cash-register, the combination, with the keys, of a series of arms carried thereby, a cross-bar adapted to be moved a different distance by each key, a screw on said cross-bar,

I and a disk rotated by said screw through the spring-labearingj, aperture Z, and spring on,

substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

VILLIAM G. LATIMER.

Witnesses: M. B. ODOGHERTY,

P. M. HULBERT. 

